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Leaf with scab damage

Scabs are fungal diseases that cause fruits, leaves, and tubers to develop areas of hardened, overgrown, and sometimes cracked tissue. Fruit scab can be a major problem on apples and peaches. Control by disposing of fallen leaves and pruning to increase air movement. If you’ve had past serious problems with scab, ask your local extension service about the best spray schedule for sulfur to control the disease.